From owner-freebsd-questions  Thu May 11 23:47:18 2000
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Date:   Fri, 12 May 2000 08:46:56 +0200
From: Erik Trulsson <ertr1013@student.csd.uu.se>
To: Mark Ovens <mark@dogma.freebsd-uk.eu.org>
Cc: questions@FreeBSD.ORG
Subject: Re: getopt(1) or getopts(1)?
Message-ID: <20000512084656.A1146@student.csd.uu.se>
References: <20000511231319.C1522@parish>
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In-Reply-To: <20000511231319.C1522@parish>; from mark@dogma.freebsd-uk.eu.org on Thu, May 11, 2000 at 11:13:19PM +0100
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On Thu, May 11, 2000 at 11:13:19PM +0100, Mark Ovens wrote:
> Can someone clarify getopt(1) and getopts(1)? According to sh(1):
> 
>  getopts optstring var
>      The POSIX getopts command.  The getopts command deprecates the
>      older getopt(1) command.....
> 
> but there is no manpage for getopts(1), only getopt(1). The latter
> includes some sample code which works fine, however if I change
> ``getopt'' to ``getopts'' in this code I get:
> 
> parish:/usr/marko{89}% ./foobar -b
> getopts: -b: bad variable name
> Usage: ...
> parish:/usr/marko{90}%
> 
> Since getopt(1) is deprecated it would be better to use getopts(1).
> Can anyone explain the above error, or point me to some documentation
> for getopts(1)?
> 

On my system (4.0-stable) there is a manpage for getopts(1). It just a link
to buiiltin(1) which says that it is a builtin command in sh(1).
The manpage for sh(1) has the following to say about getopts:

   getopts optstring var
             The POSIX getopts command.  The getopts command deprecates the
             older getopt(1) command.  The first argument should be a series
             of letters, each possibly followed by a colon which indicates
             that the option takes an argument.  The specified variable is set
             to the parsed option.  The index of the next argument is placed
             into the shell variable OPTIND. If an option takes an argument,
             it is placed into the shell variable OPTARG. If an invalid option
             is encountered, var is set to `?''. It returns a false value (1)
             when it encounters the end of the options.






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